Paper saucepan

Do you believe that you can boil water in a paper cup over a naked flame or in the embers of a fire!

Push a knitting needle through the rim of a paper cup containing some water, hang it between two upright bottles and light a candle under the cup.

After a little while the water boils - but the cup is not even scorched.

The water removes the heat transferred to the paper and begins to boil at a temperature of 212F or 100C.

The water does not get any hotter, so the paper does not reach the temperature, which is necessary for it to burn.